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High-performance environment-friendly polypropylene blending material and preparation method thereof

An environment-friendly, polypropylene technology, applied in the field of high-performance environment-friendly polypropylene blend materials and their preparation, to achieve the effects of improving mechanical properties, wide application range, and avoiding phase separation

Inactive Publication Date: 2011-04-20
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results show that adding 3 parts of regeneration agent De-link can significantly improve the mechanical properties of waste PP / GTR composites, and the impact strength of composites modified by De-link is 16.0kJ·m - 2 , which is nearly 1.2 times higher than that of waste PP, and 1.4 times higher than that of waste PP / GTR simple blend system without modifier, and the tensile strength is increased by 31%, but it only reaches 15.9 MPa

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Commercially available waste tire rubber powder (60 mesh) was moderately dried at a drying temperature of 70°C for 2 hours. Weigh 240g of dried rubber powder and 2.4g of commercially available high-efficiency regenerative activator WR510 into a high-speed mixer, stir at a high speed for 5-8min at a temperature of 70-100°C, cool to below 40°C, and mix 560g Polypropylene (PP) (F401, pellets, Yangzi Petrochemical Co., Ltd.) was added into a high-speed mixer for preliminary mixing.

[0025] Weigh 2.8g of commercially available antioxidant (the mass ratio of antioxidant 1010 and antioxidant 168 is 3:2), compatibilizer MAH 24g and DVB 24g, initiator dicumyl peroxide (DCP) 2.4g Dissolve in acetone, then pour into the pre-mixed rubber powder / PP mixture, continue mixing in a high-speed mixer for 3-5 minutes, and extrude and granulate through a twin-screw extruder after the acetone volatilizes, the process temperature is 160 ~200°C. The obtained pellets were dried at 80° C. for...

Embodiment 2

[0033] Other is the same as embodiment 1, wherein the amount of compatibilizer MAH and DVB is respectively changed into 6g and 18g, and gained material performance is as follows: tensile strength is 28.17 MPa, and Izod notched impact strength is 12.19 KJ m -2 , Bending strength 28.80 MPa.

Embodiment 3

[0035] Other is the same as embodiment 1, wherein the amount of compatibilizer MAH and DVB is changed into 12g and 12g respectively, gained material performance is as follows: tensile property is 27.29 MPa, Izod notched impact strength is 10.12 KJ m -2 , and the bending strength is 29.09 MPa.

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Abstract

The invention belongs to the field of processing modification of polymers, and provides a high-performance environment-friendly polypropylene blending material and a preparation method thereof. The preparation method is characterized in that: in the mixing process of a surface active rubber powder and polypropylene (PP), a small amount of maleic anhydride and polyene compounds are added, the in-situ reactive compatibilization is realized in a twin-screw extruder under the action of an initiator, and the shortcomings of the degradation of the polypropylene in the melt extrusion process and serious losses of other mechanical properties in a toughening system are overcome, accordingly, the high-strength and high-toughness PP / scrap tire rubber powder environment-friendly blending material is obtained. The process of the invention can be used to realize the functions of auxiliary materials in a material prescription, especially the reaction function, and ensure the comprehensive performances of the blending material. The special PP / scrap tire rubber powder material prepared by the invention meets the use requirements of the actual project, and has the advantages of simple preparation process, lower production cost, wide range of application, and very strong economic benefit and environmental benefit.

Description

technical field [0001] The invention relates to a high-performance environment-friendly polypropylene blend material and a preparation method thereof, belonging to the field of polymer processing and modification. Background technique [0002] Polypropylene (PP) is a rising star among thermoplastics. Due to its abundant raw materials, cheap price, excellent performance and wide application, it has become the fastest growing variety among thermoplastics. It has many excellent properties, light weight, low density, excellent mechanical properties, outstanding stress crack resistance and rigidity, and has good heat resistance and good chemical stability. In addition, it also has excellent processing performance, and various processing methods such as injection molding, extrusion and hollow molding can be used for product molding. However, the disadvantages of polypropylene cannot be ignored. The biggest disadvantage is poor cold resistance and brittleness at low temperature...

Claims

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Application Information

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IPC IPC(8): C08L23/12C08L7/00C08L9/00C08L9/06C08F291/00
Inventor 陶国良刘春林廖华勇
Owner CHANGZHOU UNIV
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